lilly pretty much covered the subject of toxicity. There's also the subject of the color: snow returns almost all of the light because it's white, but if it's painted red some of the radiation will not be reflected back, and instead it will heat up the snow. I don't know what's the temperature there, but if it's not too high the paint could cause the snow to melt.
The search for people who can answer your question continues for as long as needed - until you find the answer you were looking for.
When an answer is posted by someone who was invited (byYedda or by yourself) to answer your question, their answer is marked with a yellow "invited by Yedda".
To be invited to answer other people's questions in your areas of knowledge and interest, be sure to list your favorite topics:
» My Settings › My Topics.
Of course, the more helpful your answers are, the more likely you are to be invited to future questions...
